Type-writing machine.



L. R. ROBERTS.

TYPE WRITING MACHINE.

Patented Apr. 13, 1915.

4 SHEETS-SHEET 1 APPLICATION FILED DEC. 23. I909.

1 I I II 1 1 L. R. ROBERTS.

TYPE WRITING MACHINE.

APPLICATION FILED DEC. 23. I909.

Patented Apr. 13, 1915.

4 SHEETS-SHEET 2.

L. R. ROBERTS. TYPE WRITING MACHINE.

APPLICATION FILED DC,23. 1909.

m flw Patented Apr.1l3,1915.

% SHEETS-SHEET 3.

- j MPWD Q ya, I I l a ff L. R. ROBERTS.

TYPE WRITING MACHINE.

APPLICATION nuzo 05023, 1909.

I 1. ,l 35 JIWUm Patented Apr. 13, 1915.

4 SHBETSSHBET 4.

6 1295, FZ/g.

y ens r p.

EYE/LAN 1R. ROBERTS, 0F RUTHERFORD, NEW JERSEY, ASSIGNOE. T0 UNEERWOOD TYPE- WRIULEB- CQMJPANY, OF. NEW YORK, N. Y., A. CORPORATION OF DELAWARE.

TYPE WRITING- MACHINE.

new and useful Improvements in Type-Writing Machines, of which the following is a specification.

This invention relates to the work-handling devices of typewriting and analogous machines, and particularly to means for feeding the work members, for example envelops, around the platens; although many of the features of the new construction are usable for also presenting other devices than envelops to the platens of such machines.

An endless band carries the work members and presents them properly to the platen, and the band may be driven by a suitable train of mechanism connected to the platen itself. The band preferably consists of a pair of thin flexible metal strips, from Which project lugs or carriers, to carry the work members; means being provided for preventing the work from falling ofi from the lugs.

When using the improvements for the purpose of feeding the envelops, an envelop magazine is provided, and one by one the envelops are picked up by the lugs or carriers projecting from the endless band, said lugs being for this purpose preferably made in the form of hooks arranged to catch under the flaps of the envelops.

The magazine or receptacle for the envelops is provided with means which tends to project the flaps slightly away from the ping off from the lugs when running around i the under side of the platen.

The work controlling devices are all mounted together with the platen upon the platen frame or carriage of a typewriter. In the caseof the Underwood typewriter, to which my invention is shown applied, this Patented Apr. l3, ll llfi.

Application filed December 23, 1909. Serial No. 534,579.

platen frame shifts up and down for writ.- 1ng capitals and small letters, and the work-feeding or controlling devices are mounted upon a light framework comprising a pair of standards, which are secured to the platen frame of the typewriter, and upon which is mounted a band-driving shaft having a pulley or support over which the band runs, and also preferably having a pinion which .is connected by an endless chain, to a sprocket wheel fixed to the .revolving platen. Said pulley may carry teeth, and the band (or the strips composing the band) is perforated to receive the teeth, and hence the strips are, both positively connected by said pulleys, shaft, pinion, chain and sprocket wheel to the platen, and are caused to travel in unison or as if made in one piece.

It will be understood that certain of the features of the invention, especially those wh1ch relate to presenting work members squarely to the platen by means of an endless band having projections in pairs to engage the work members at their opposite sides, are usable for line-feeding other work members than envelops.

In the accompanying drawings, Figure 1 is a front perspective elevation of, the present' lmprovements used for feeding envelops and applied to an Underwood typewriting machine. Fig. 2 is a front elevation of the same. Fig. 3 is a side elevation. Fig. 4 is a rear perspective view of the envelop magazine. Fig. 5 is a sectional side elevation of the envelop feeding devices. Fig. 6 is a perspective detail, to illustrate the manner in which the hooks catch within the flap of the envelop. Fig. 7 is a detail view of the usual line-space mechanism.

The typewriting machine comprises keys 1, which cause-type bars 2 to strike against the front side of a cylindrical platen 3. The latter is journaled by means of an axle 4 in the ends 5 of the platen frame, said ends connected by an inclined plate 6, which forms the usual paper shelf behind the platen; the lower end of said paper shelf curving around the under side of the platen, as shown. The platen frame rests upon a carriage 7, which, it will be understood, is fed in letter-space direction in the usual envelops 6 are stacked in a magazine or I receptacle at the back of themachine, said receptacle comprising sides 8, a floor 9, and a front plate 10 having at its bottom an opening 11, down throughwhich the envelops are withdrawn. The envelops are picked up byclaws, prongs or hooks12 provided upon work-supportmg bands comprising strips 13, whereby the envelops are carried downwardly and forwardly around the under. side of the platen and up in front thereof to be imprinted by the type bars 2. Each of said bands, strips or belts 13 consists of a very thin flexible metal strip, the ends of which maybe joined in any sultable manner, as by means of a ton e 14 at one end passing through an opening 15 1n. the other end, Fig. 6. The bands may extend upwardly from the end portlons of the platen and run over a pair of remote gulding pulleys 16, forming a support for said bands opposite to the platen, and fixed upon a horizontal drive-shaftv 17, and having teeth 18 to engage or interlock with perforations 19 formed in the separated belts, whereby the latter are positively driven, and caused to travel in unison. The width of the belts or strips is immaterial, but. they are preferably separated, orin other words an opening or space occurs between them, to

permit the envelop to be directly supported I against the platen at the printing line thereon.

The drive shaft 17 is provided with a sprocket pinion 20, over which runs an endless sprocket chain 21; and to the platen 3 is fixed a sprocket gear 22, over which said chain also runs. The parts are preferably so proportioned that the surface movement of each envelop or other work member at each line-spacing operation is exactly equal to the surface movement of the platen. Preferably the feeding of the envelops is aided by the usual pressure rolls 23, 24, running on the under side of the platen. These rolls prevent the work members from drop-.

ping oil from the lugs or hooks 12. The latter, because of their thinness, may be quite yielding, and when necessary may run freely between the rolls 23, 24 and the platen.

The platen of the Underwood machine shown in the drawings is usually advanced intermittently by a handle 25 having the usual connection to the platen, includingv a slide 26 and a pawl 27, the latter engaging the usual line-spacewheel 28, which may be provided with the usual appurtenances.

Said drive shaft 17 is carried by a pair of 7 standards or supports 29, 30 in the form of plates, having at their lower ends hooks 31, 32 to catch respectively upon the usual tierod or shaft 33, which extends from end to end of the platen frame, and the rolled or beadportion 34 which is usually formed upon the top of the paper shelf 6. Each standard 29, 30 is also provided with a strap 35, adjustably secured thereto by a screw 36 passing through a slot 37; said strap havin a foot 38 to rest upon the platen frame en to which it is secured by a screw 39; the whole forming a light structure of great rigidity, said strap 35 inclining downwardly and outwardly from the standard to buttress thesame. The standards may also be connected by tie-rods 40 and 41; and upon these tie-rods may be placed idle pulleys 42, 43, to guide the band strips.

The envelops 6 are stacked on edge in inverted positions with their tops resting upon the floor 9 of the receptacle, and with their flaps foremost, 'in position to be presented to the band strips, as seen at Fig. 6. The envelops are pressed forward against the restraining front plate 10 by means of a vertical follower plate 44 having a horizontal guidingstem 45 slidable forwardly and backwardly in guides 46, 47. Bow-shaped springs 48, secured to the guide 47, press against the follower 44, and constantly urge the pack of envelops forward. The stem 45 is prolonged rearwardly and carries a handle 49, for convenience in withdrawing the follower plate 44, to permit the introduction of a fresh stack of envelops.

As the platen is rotated (by the handwheel shown, or otherwise), the hooks projecting from the rear side of the rear reaches 13 of the band strips, descend in pairs,

with points foremost in front of the front plate 10 of the envelop receptacle, and pass down along the body of the foremost envelop, and simultaneously catch within the flap 50 thereof near the ends of said flap, that is, at the sides or side portions of the envelop; said hooks being preferably formed upon the outer edges of the belts, as illustrated at Fig. 6, and the hooks in each pair being in alinement with each other, for this purpose. The flap portion of the front envelop is caused to protrude slightly through the opening 11 in the plate 10 (said opening being large enough to admit the entire flap of the envelop) so as to insure that the hooks 12 shall catch within said flaps. This protrusion is effected' partly by using the plate 10 to restrain the upper portions of the envelops, and partly by bringing forward the lower portion of the follower 44, as by placing a plate'or bar 51 upon the front face thereof,.as at Fig. 5. The strip guiding rolls 42 and 43 are placed just in front of the envelop receptacle so that the thin yielding hooks are guided downwardly in contact, or almost in contact with said front plate 10, and tend to spring rearwardly against and glide down in contact with the body of the envelop and to insert themselves between said body and the protruding flap. From the lower guide roll 43 the band is led directly around the'platen, and thence directly up to the guide pulley. The hooks or lugs are spaced at equal intervals upon each strip, and theintervals upon one strip agree with those on the other strip, and the lugs on one are paired with those on the other, so that the work members are presented squarely to the platen or the printing line thereon; the lugs on'one strip cooperatin with those on the other to this end.

he receptacle may be detachably connected to a pair of horizontal brackets 51*, projecting rearwardly from the standards 29 and 30, by means of threaded studs 52 projecting below the floor of the receptacle and nuts 53 threaded upon said studs.

In operation, the platen 3 and the sprocket wheel 22 thereon are rotated manually. By means of the chain 21 and pinion 20, rotation is simultaneously'efiected of the driveshaft 17 and the toothed pulley 16, whereby the feeding band or bands 13 are advanced simultaneously with the rotation or linespace movement of the platen. As the rear hooks 12 descend, they run down past the plate 10, (the upper edge of which is curved rearwardly at 54, so that the sprmgy hooks cannot catch thereon) and press yieldingly against the envelops and engage the flap 50 of the foremost envelop and draw the same downwardly from the receptacle, as seen at Fig. 1, and carry it forwardly under the platen and up in front thereof, where the address is written by the operation of the keys 1, the handle 25 being usually grasped and swung by the typist at the conclusion of each line, both to line-space the envelop and return the carriage 7 to-begin a new line. of

writing.

The platen is rotated sufficiently to bring the succeeding envelop into position for writing, the envelops following one another at uniform intervals around the platen, as they are caught upon the hooks.

The envelop rests directly against the platen, which has a specialtexture and consistency, to coiiperate with the usual steel types and ink ribbon, to make a readable 1mpression upon the envelop. It w1ll be seen that an opening is left for the envelop to rest directly upon the platen, at the printing line thereon. This opening is secured in the present form of the invention by forming the conveyer of the two strips, which are separated, and have hooks to engage the envelop flap at its ends, the envelop lying between the strips and hence being supported directly against the platen between said strips. The strips are caused to move in mmson by reason of the interlocking of the strips with the connected pulleys 16.

As soon as all the envelops have been fed, the handle 49 may be pulled backwardly and a fresh stack inserted into the receptacle, when the operation may be repeated. For

keeping the envelop-feeding band 13 in taut condition, the drive-shaft 17 is mounted upon a pair of posts or sections 56 adjustable vertically in guides 57 formed in the tops of the standards 29, 30; said standards having vertical slots 58 through which project screw studs 59 from the posts 56; the latter being secured by nuts 60. The nuts may be loosened and the posts 56 dropped when the machine is to remain out of use to discontinue the fieizessary working tension upon the double A frontguide for the envelops may be formed of wire and consist of an inverted looped portion 61, pendent from arms 62 secured by screws 63 to the standards 29, 30; the guiding portion 61 flaring forwardly at its lower end at a point near the platen 3, in position to catch the leading edge of the envelop and hold it back, while the lower portion of the envelop is curved around the bottom of the laten. This guide may be effective until t e envelop resumes its normal straight condition and rides u the rear-- wardly inclined forward reach of the double band, whence it may be removed by the typist. If desired, however, the discharge chute 55, shown in Fig. 3, may be employed, the envelop in such case falling onto said chute from the top of the double band.

Work-feeding devices such as disclosed herein may be operated by pneumatic devices such as disclosed in application 428,050, filed April 20, 1908. No claims are made herein to pneumatic or power-driven typewriting mechanism. Such power-driven devices are disclosed and claimed in my companion application No. 775,654, filed June 25, 1913, in connection with work-feeding mechanisms. The claims herein are broadly directed to work-feeding means for typewriters, but not to power-driven means to operate the same. No pneumatically-operated or power-driven mechanism for actuating the work-feeding mechanism is therefore described in the present case, and reference may be had to said application 775,654, wherein said mechanism is described and claimed.

Where the hooks 12 are not capable of holding the envelops onto the belt after they have been drawn from the receptacle, I provide a table 78 extending downward from the floor of the magazine or receptacle behind and in engagement with the back reach 13 of the band, to serve as a guard to retain the envelops or work members upon the hooks or lugs. Prior to the withdrawal of the upper edge of the envelop from the re ceptacle, the lower edge of the envelop, with the hooks in engagement with the flap, will be drawn between the table and the belt. Otherwise the envelop once free from its receptacle might drop out of the hooks and fail to'be properly printed and discharged 25 framework, -perforated from the machine. The table cooperates with the band and lugsin conducting the envelops to the platen. The table may press the envelop gently against the belt, creating frictional resistance, so as to prevent the disengagement of the envelop from the hooks. The table 78 may be yielding to accommodate envelops ofvarying thicknesses. Where the flexible band 13 runs around the under side of the platen, the work members are prevented by the rolls 23, 24, or the curved end of table 6, or both, from dropping off from the lugs on the flexibleband.

Variations may be resorted to within the 15 scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim:

1. The combination with a typewriter having a carriage, a platen and keys to feed latter entering the perforations in the strips to cause them to travel in unison, and a sprocket wheel and chain connection between the said pulleys and the platen. a a

2. The combination with a carriage and a platen thereon, of an envelop receptacle,

toothed pulleys, perforated endless feeding means comprising two strips separated and each having fingers or hooks to engage the flaps of the envelops, said strips passing un- Q40 der the platen" and over said pulleys, the

teeth of the latter entering the perforations in the strips to cause them to travel in unison, a connection between said pulleys and the platen, and means for permitting adjust ment to takeup slack in either strip inde pendently of the other.

3. A device for feeding envelops to the platens of typewriting machines, comprising. a receptacle for the envelops, a conveyer comprising separated strips each havingprongs or hooks for engaging the flaps of the envelops, pulleys iiiterlocking with said strips, and mechanism driven by the typewriter for imparting rotation to said 5 pulleys, whereby the conveyer strips are moved in unison to bring the envelops successively into position to be addressed.

4:. The combination with a typewriter ,carriage having line-spacing devices,'and

typewriteroperating mechanism including means connected to said line-spacing devices for operating the same, of envelop-feeding devices connected to the platen and including an envelop-conveying belt having hooks to catch'the envelops; said hooks atining movements of the platen, for the purpose specified.

5 In a typewriting machine, the combi nation with a platen, of an envelop-feeding mechanism including an envelop receptaclecontaining envelops and having a delivery opening, and a conveyer comprising a plurality of separated belts and means to cause them to move at equal speeds, hooks on the belts, the hooks on one belt maintained in horizontal alinement with those on the remaining belt and passing close to the envelop receptacle to simultaneously grip and remove the envelops successively from the receptacle and feed them to the platen.

6 In a typewriting machine, the combination with a platen, of an envelop feeding device comprising. an envelop receptacle havinga delivery opening, a conveyor passing ad acent to said opening and having hooks to remove the envelops successively from the receptacle and feed them to the platen, said conveyer divided into separated sections and. passing around the platen and around a pulleydevice having positive engagement with each of said sections, to cause them to travel in unison, and gearing connecting the platen and pulley for rotating the latter.

7 In a typewriting machine, the combination with a platen, of an envelop-feeding device comprising an envelop receptacle, an

end plate closing the delivery end of the receptacle, to restrain the envelops, and having anopening through which the flap portion of the envelop may protrude, a retractable follower in the receptacle for pressing the envelops toward the end plate, and having means whereby the flaps of the envelops are caused to protrude through the opening in 'the plate, and conveying mechanism for removing the envelops successively through the opening and feeding. them to the platen.

'8. In a typewriting machine, the combination with a platen, of an envelop-feeding device comprising an envelop receptacle, an

envelop-restraining. end plate having an opening therethrough and partially closing the delivery end of 'the receptacle, a retractable follower in the receptacle for pressing the envelops toward the end plate, and having.a crowding portion on that face adjacent the envelops and in alinement with the opening, wherebythe flaps of the envelops are caused to protrude through the opening in the plate, and conveying mechanism for removing the envelops successively through tlge opening and feeding them to the platen.

9: The combination with a typewriting machineincluding a carriage, a platen, and line-spacing mechanism, of an envelop feeding device detachably secured to and moving with the carriage, and including conveying mechanism to feed the envelops successively to the platen, and a front guide secured to and removable with the envelopfeeding device to conduct the envelops around the front face of the platen.

10. In a mechanically operated typewriting machine, the combination with a carriage and a platen, of an envelop-feeding device including an envelop conveyer operated from the carriage and having hooks thereon spaced apart at intervals equal to exact multiples of the line-spacing movement of the platen, and mechanicallyoperated line-space and carriage-return mechanism effective to automatically drive the conveyer to feed envelops successively to the platen in position to be printed, and to advance them around the platen to receive the successive lines of printing, the feeding movement of the envelops at each line-spacing operation being equal to the surface movement of the platen.

11. In a typewriting machine, the combination with a platen, of an envelop feeding device comprising an envelop receptacle, conveying mechanism having hooks for engaging the envelops successively to Withdraw them from the receptacle and feed them to the platen, and a retainer engaged by the envelop as it is withdrawn to prevent its disengagement from the hooks.

12. In a typewriting machine, the combination with a platen, of an envelop feeding device comprising an envelop'receptacle, conveying mechanism having'hooks for engaging the envelops successively to withdraw them from the receptacle and feed them to the platen, and a table located between the receptacle and the platen, over which the envelops pass, to prevent their disengagement from the hooks.

13. In a typewriting machine, the com bination with a platen, of an envelop feeding device comprising an envelop receptacle,

conveying mechanism having hooks for engaging the envelops successively to withdraw them from the receptacle and feed them to the platen, and a yielding table located between the receptacle and the platen and pressing the envelops against the conveyer to prevent their disengagement therefrom subsequent to their withdrawal from the receptacle.

14. The combination of a typewriter carriage, a revoluble platen thereon, a receptacle on said carriage for envelops, a framework on said carriage, toothed pulleys journaled in said framework, a perforated endless carrier having fingers or hooks to engage the traps of the envelops, said carrier passing under the platen and'over said pulleys, the teeth of the latter entering the perforations in the carrier, said carrier made in two separated portions caused by said pulleys to travel in unison, and means connected to the carrier and the envelops are brought successively into position to be addressed.

15. An envelop-feeding device comprising a pair of thin flexible sheet metal bands, each having prongs to catch under the flaps of the envelops, near opposite ends of the envelops, so that the body of the envelop extends in the direction of its length between the bands, and means to cause the bands to travel in unison.

16. An envelop writing and feeding device comprising a pair of feeding-bands, each having prongs to catch under the flaps of the envelops, supporting devices over which said bands run, one of said supporting devices being a revoluble typewriter platen, and the bands being arranged to engage the envelop near its ends, so that the body of the envelop lies upon the platen between the bands, and means being provided upon certain of said supporting devices to cause the bands to travel in unison.

17. The combination with a typewriter platen, of an envelop-feeding device comprising a pair of bands, each having prongs to catch under the flaps. of the envelops adjacent the opposite ends of the envelop,

the arrangement being such that the body of the envelop rests upon the platen between the bands, and a revoluble device over which the bands run; means being provided upon said revoluble device to cause the bands to travel in unison.

18. The combination with a typewriter platen, of an. envelop receptacle, an endless conveyer having prongs or hooks thereon to engage the flaps of the envelops and withdraw them from the receptacle, line-spacing mechanism for said platen, and means disover which the bands travel, said revoluble device having means to connect said bands so that they will travel in unison.

20. The combination with a typewriter platen, of an envelop receptacle, a thin flexible sheet metal conveyer running over the platen and having prongs 0r hooks to engage the flaps of the envelops, said conveyer also having perforations, a pulley device over which said conveyer runs, sa d pulley device having teeth to enter sald perforations, and means for efiectlng intermittent rotation of the pulley device to linespace said conveyer.

21. A typewriting machine, comprising a revoluble platen; thin, flexible bands arranged one at each end of the platen, to run over said platen and leave the intervening printing field thereof uncovered, each of said bands having means thereon to catch under-the flap of an envelop, the catching means on one band being in register with those on the other band; and means for controlling said bands to cause themto move in unison, thereby to preserve the aforesaid registry of the catching means and cause the envelop to be presented squarely to the platen at the printing line thereon.

22. An envelop-feeding device comprising a pair of flexible bands spaced apart so that the body of the envelop lies between them, each band having means to catch under the flap of the envelop near the ends thereof, a roll or pulley device over which said bands run, and means to interlock the bands with the roll or pulley device to cause the bands to travel in unison.

23. The combination with a typewriter platen, of an envelop conveyer to run over the platen, and an envelop receptacle past which said conveyer moves, the conveyer having pairs of prongs or hooks to catch under the envelop. flap at its ends, means being provided to cause the opposite prongs to travel in unison, and the conveyer constructed with an opening between its opposite sides or members, to permit the envelop to be supported directly against the platen at the printing line.

24. A device for feeding envelops to the platen of a typewriting machine, comprising a receptacle for the envelops, a conveyer comprising two flexible strips, each having prongs or hooksthere on to engage the flap of the envelop at the opposite end thereof,

connected pulleys over which said strips run, said conveyer having perforations, and

said pulleys provided with teeth to enter said perforations, and means operable through the movements of the typewriting machine to advance said conveyer to bring the envelops successively to position to be addressed. I 4

25. The combination of a pair of envelopfeeding bands, each having means to catch under the flap of the envelop, an envelop receptacle past which said bands run, a

platen over which said bands travel, a linespacing wheel for said platen, a pulley device over which, said bands run, said pulley device having means to interlock with said.

bands,- to cause them to travel in unison,

r feeder for supplying envelops to said platen,

amagazine for said envelops, said magazine comprising a bottom plate-and a front plate having a space between lower edge and said bottom plate, said front plate having its rear face at itsbottom edge vertically superposed above a line within the outer edge of said bottom plate, so as to retain the portions of the envelop engaging said front plate to the rear of the front edge of Said bottom plate, and means for bulging that portion of the foremost envelop extending below the bottom edge of said front late out through the opening between said ront plate and said bottom plate and beyond the front edge of said bottom plate so that said ,feeder can strip the foremost envelop from said magazine and carry it to said platen.

27. The combination with a platen, of feeding means for supplying envelops to said platen, said feeding means comprising a pair of individual endless conveyers spaced one from the other, and driving means common to both said conveyers for driving them in unison, each of said conveyers having means to engage envelops located thereon in alinement with corresponding means of the other conveyer, so that the envelops will be moved in parallelism to said platen with respect to the axis thereof.

28. The combination with a platen, of a plurality of work-member conveyers for supplying work members to said platen, said conveyers being loosely connected to said platen and passingaround the same, and driving connections for affording a consentaneous movement of said conveyers and said platen to enable a movement of said work members in synchronism with the movement of said platen.

-with, and driving means for said conveyer at a point other than its contact with said platen.

30. The combination with a platen, of a work-member conveyer passing around said platen and loosely engaging therewith so as to feed work members to said platen and yet be independent of rigid connection with said platen at the point of contact therewith, and driving connections between said platen and said conveyer for enabling the driving of said conveyer at a point other than its point of contact with said platen.

31.- The combination with a platen, of an endless conveyer for supplying work members to said platen, said conveyer having means for engaging the work members located at equal intervals corresponding to multiples of line-space movements of said platen, and means for driving said platen and said conveyer in unison.

32 The combination with a platen, of'a isa-ciao conveyer passing around said platen but independent of driving connection with said platen at the point of contact therewith, said conveyer having work-member engaging means located at equal intervals corresponding to multiples of line-space movements of said platen, and means for driving said conveyer and said platen in unison.

33. The combination with a platen, of a plurality of endless conveyers passing around said platen and'independent of direct connection with each other, and means for driving said conveyers from said platen at a point extraneous to said platen.

34:. The combination with a platen, of an endless conveyer for supplying envelops to said platen, an envelop magazine, said con,- veyer having means thereon to engage the flap of an envelop, a plurality of rollers for guiding said conveyer directly across the face of said magazine, and means for bulging out the flap portion of said envelops from said magazine into the path of said envelop-engaging means on said conveyer as it is guided past said magazine by said rollers.

35. The combination with a platen, of a feeder for supplying work members to said platen, a magazine for said work members having an opening therein extending but a fraction of the front face thereof, a back plate for maintaining said work members in contact with said specifically-mentioned face, and a bar projecting from the face of said back plate into engagement with said members at a point in alinement with said opening, so as to bulge one end of each of said work members successively through said opening as it comes in engagement with said front face, said feeder acting to'strip the foremost work member from said magazine out through said opening.

36. In a typewriting machine, the combination with a platen, of a device for feeding inverted envelops thereto, comprising a receptacle for the envelops, said receptacle having a discharge orifice, a band movable downwardly close to said orifice and provided with prongs or hooks to engage the exposed flap of the envelop, and means operable through the movements of the platen for moving said band to bring the envelops successively into position to be addressed; means beingprovided Within the holder or receptacle for moving the envelops forward and restraining the upper or body portions of the envelops and only causing their lowermost flap portions to protrude beyond the discharge orifice and into contact with the conveyer or band.

37. The combination of a platen, an envelop receptacle, endless flexible traveling members, a guide roll operatively associated with said members; said members being provided with lugs or carriers 'to engage the envelops between the flap and body portions thereof, and a guide between which and said members the envelops are led from the receptacle to the platen.

38. The combination of a platen, a platen carriage a receptacle for envelops, a frame supporting said receptacle, said frame being mounted upon said carriage and said receptacle disposed in rear of the platen, endless flexible traveling members, a revoluble guiding device operatively associated with said members, means for operatively connecting said members to rotate with the platen; said members having lugs or carriers on them to engage the envelops between the flap and body portions thereof, and a guide by which the envelops are led to said platen.

89. The combination of a typewriter platen, a platen carriage, an envelop receptacle, rotatable guiding means, flexible traveling members running over said guiding means, means operatively associated with the platen to rotate said guiding means, carriers or lugs on each of said traveling members to engage the envelops between the flap and body portions thereof, said traveling members being'spaced apart so that the body of the envelop lies between them, and .means to guide the envelops from the receptacle to the platen.-

40. The combination of a platen, a platen carriage, a frame mounted upon said carriage in rear of the platen, a magazine for the envelops, a guide roll supported by the frame, endless flexible traveling members passing around the guide roll and having means on each of them for engaging the envelops between the flap and body portions thereof, to feed the envelops, said traveling members being spaced apart so that the body of the envelop lies between them, a sheave upon the guide roll, a sheave connected to the platen, and a belt passing around said sheaves.

41. The combination with a revoluble platen, of endless cooperative work-carrying bands at the end portions thereof, and means remote from said platen and extending from one band to .another to engage the bands, to cause them to move in unison.

t2. The combination with a revoluble platen, of endless cooperative work-carrying bands at the end portions thereof, and means remote from said platen and extending from one band to another to engage the bands, to cause them to move in unison, said bands having projections upon which the work members are caught.

43. The combination with a revoluble platen, of supporting means arranged above the platen, cooperative endless bands extending from the platen over said supporting means, and separated to leave a printing field between them on the platen, lugs projecting 'from said bands to hold the work members, the lugs on one band being 1n register with those on the other band, and means to insure the bands running in unison, whereby the aforesaid registry between the lugs is preserved and the work members are caused to be presented squarely to the platen at the printing line thereon.

-14. The combination ofarevoluble platen, a. frame upon which it is mounted, a standard rising from said frame, a support carried upon said standard, a pair of cooperative bands running around the platen and over said support and separated to leave a printing field between them on the platen, work-engaging lugs projecting from 'said bands, the lugs on one band being in register with 7 those on the other band, and

means to insure the bands traveling in unison, whereby the aforesaid registry between the lugs is preserved and the work members are caused to be presented squarely to the platen at the printing line thereon.

45. The combination of a revoluble platen, a frame upon which .it ismounted,astandard rising from said frame, a support carried upon said standard, a pair of cooperative bands running around the platen and over said support and separated to leave a printing field between them on the platen, work-engaging lugs projecting from said bands the lugs on one band being in register with those on the other band, and means arranged on said support to cooperate with the bands, to insure the bands traveling in unison, whereby the aforesaid registry between the lugs is preserved and the work members are caused to be presented squarely to the platen at the printing line thereon.

4:6. The combination with a platen, of an endless flexible means or device to run over said platen, a revoluble support remote from the platen over which said flexible device I turns, a set of, lugs upon said flexible device for carrying the work, and gearing'to drive said revoluble support from the platen. V

47. The combination with an endless flexible device, of lugs on said device carrying the work, a revoluble platen and roll overv the platen over which the'bands run, work,

carrying lugs on said bands in osition to engage the work at the side bor er. or portion thereof to carry the work around the platen, and a guardextending along one reach of said bands to retain the work members upon said lugs, said bands being spaced to permit the work carried by said lugs to bear directly on the platen at the printing point.

49. The combination with a revoluble platen, of endless parallel rows of workcarrying lugs, the lugs in each row arranged at equal intervals, and the intervals in one row equal to those in the other row, flexible endless carrying means for said lugs, said flexible carrying means running over the platen, supporting means remote from the platen over which said flexible carrying means runs; said rows separated from each other and arranged to hold the work at opposite side portions or borders thereof to carry the work around the platen; and means both arranged at the under side of the platen and extending along said endless car rying means in proximity thereto, for preventing the work from dropping off from said lugs.

50. The combination with a platen and a frame upon which it is mounted, of a standard rising from said frame, a support car- .ried upon said standard, an endless flexible band running around the platen and over said support, and an endless series ofworkcarrying lugs on said band, the lugs arranged atequal intervals along said band to travel therewith and positioned and arranged to engage the side or border portions of the work members to carry the same around the platen.

51. The combination with a revoluble platen and a frame upon which it is mounted, of a standard or fixture extending from said frame, a support carried upon said standard, endless flexible work-carrying means running over said platen and support, and means permitting adjustment of the length of said standard.

52. The combination with a revoluble platen and a frame upon which it is mounted, of opposite standards rising from said frame, said standards being extensible, a support carried by said standards, and endless flexible work-carrying means running over said platen and said support; said work-carrying means provided with evenlyspaced lugs cooperating with. one another to carry the work squarely around the platen.

531 The combination with a revoluble platen, of'an endless band running around the platen, a support remote from the platen over which said band runs, one reach of said band extending from said support to the rearof the platen to run around the under side thereof, work-carryin lugs on said band, and a guard exten ing along said reach in such relation thereto that the work members are confined between-the guard and the band, and prevented by the guard from falling off from the lugs.

54. The combination with a platen and a Leo mann

support remote therefrom, of an endless band running over said platen and said support, work-carrying lugs on said band, and means including devices arranged at the under side of the platen and extending away from the rear side of said platen along one reach of said band for preventing the work members from dropping 0d from the lugs.

55. The combination with a platen, of a band running around the platen, work-can rying lugs or members upon said band, a portion of said band extending from the platen in such position that the work is liable to drop off from said lugs, and means to prevent the work from dropping off from the lugs.

56. The combination with a platen, of a band running around the platen, work-carrying lugs or members upon said band, a-

portion of said band extending from the platen in such position that the work is liable to drop off from said lugs, and means both extending along said reach and arranged at the under side of the platen for preventing the work from dropping off from said lugs.

57. The combination with a platen, of two independently-movable endless parallel rows of work-carrying lugs, said rows running around the platen in spaced relation to each other to leave the intervening printing field of the platen uncovered and extending away therefrom; and means for supporting said lugs and causing the lugs in one row to travel in unison with and coiiperate with the lugs in the other row, the lugs in one row being paired with the lugs in the other row,-

and the lugs in each pair being in alinement, for presenting the work squarely to the platen or the printing line thereon.

58. A device for feeding envelops to the platen of a typewriting machine, comprising a receptacle for the envelops, said receptacle mounted on the typewriter carriage, a conveyer having carriers thereon to engage the flaps of the envelops, a pulley device for said conveyer, and mechanism driven by-the typewriting machine independently of the envelops to rotate said pulley device and drive said conveyer to and cause said conveyer to feed the envelops successively forward.

59. The combination with a typewriter carriage and a platen thereon, of an envelop receptacle on the carriage, a framework on said carriage, a pulley device journaled in said frame work. an endless conveyer running over said pullev device and having carriers to engage the flaps of the envelops, and means connected to the platen for rotating said pulley device to drive said conveyer and move the envelops successively toward position to be addressed.

60. A device for feeding envelops to the platen of a typewriting machine, comprising a receptacle for the envelops, a conveyer comprising separated strips, carriers on said conveyer to engage the flaps of the envelops, said envelops extending longitudinally between said strips, a pulley device over which said strips run, and mechanism driven by the typewriter for imparting rotation to said pulley device, whereby said strips are moved in unison to carry the envelops successively toward position to be addressed.

61. In a typewriting machine, the combination with a platen, of means for feeding inverted envelops thereto, comprising a receptacle for the envelops, said receptacle having a discharge orifice, a conveyer movable downwardly to said orifice, and provided with carriers to engage the exposed flap of the envelop, means operable through the movements of the platen to drive said conveyer to bring the envelops successively into position to be addressed, and means provided within the said receptacle for moving the envelops forward and restraining the upper or body portions of the envelops whereby the flap portions are protruded into the path of said carriers.

62. The combination with a platen and a platen carriage, of an envelop receptacle, rotatable guiding means, flexible traveling members running over said guiding means and connected thereby, means causing the platen to rotate said guiding means to drive said traveling members, carriers on said traveling members to engage the envelops between the flaps and body portions thereof, and means to guide envelops from the re ceptacle to the platen.

63. The combination with a rotary platen, of an envelop conveyer comprising flexible endless members spaced apart to permit the envelops to extend longitudinally therebetween, carriers connected to said members at equal intervals, a receptacle for the envelops, means for feeding the envelops in said receptacle forward into the path of said carriers, and driving connections from 1 the platen to said conveyer, whereby said carriers successively engage the envelops and carry them forward toward the platen as the latter is rotated.

64:. A device for feeding envelops to the platens of typewriting machines, comprising a receptacle for the envelops, said receptacle mounted on the carriage, a conveyer having prongs or hooks thereon to engage the flaps of the envelops, said conveyer also having perforations, and a roll device for said conveyer, said roll device being provided with teeth to enter said perforations, and said conveyer being connected to the typewriting machine to be driven thereby independently of the envelops to bring the envelops successively into position to be addressed.

65. The combination of a typewriter carriage, a revoluble platen thereon, a receptacle on said carriage for envelops, a toothed roll device on said carriage, and a perforated endless band -having fingers or hooks to engage the flaps of the envelops, said band passing under the platen and over said roll device, the teeth of the latter entering the perforations in the band, said band connected to the platen whereby motion is imparted to the band and the envelops are brought successively into position to be addressed.

66. The combination with a typewriter. having a carriage, and a'platen, of a receptacle or the envelops, a toothed roll device on the carriage, and perforated endless feedingmeans comprising two separatedstrips each having fingers or hooks to engage the.

flaps of the envelops, said strips passing under the'platen and, over said roll device, the teeth of the latter entering the perforations inthe strips to cause them to travel in unison.

67. A device for feeding envelops to the platens of typewriting machines, comprising a receptacle for the envelops, a conveyer comprising separated strips each having prongs or hooks for engaging the flaps of the envelops, and a roll device interlocking with said strips, and driven by the typewriter platen, whereby the conveyer strips are moved in unison to bring the envelops successively into position to be addressed. 68. In a typewriting machine, the combination with a platen, of an envelop-feeding device comprising an envelop receptacle, an end plate closing the delivery end of the receptacle, to restrain the envelops, and

having an opening through which the flap portion of the envelop may protrude, and

conveying mechanism for removing the envelops successively through the opening and feedin them to the platen.

69. n a typewriting machine, the combination with a platen, of a device for feeding inverted envelops thereto, comprising a receptacle for the envelops, said receptacle having a discharge orifice, and a band movable downwardly close to said orifice and.

engage the envelops between the flap and body portions thereof.

71. The combination of a typewriter platen, a platen carriage, an envelop receptacle, ro-

'tatable guiding means, flexible traveling members running over said guiding means, and operatively associated with the platen to be driven thereby, and carriers or lugs on said traveling members to engage the envelops between the flap and body portions thereof. C

72. A typewriting machine, comprislng a revoluble platen endless flexible work-ca rrying bands arranged one at each end of the platen to'run over said platen and leave the intervening printing field thereof uncovered; supporting means remote from the platen over which the bands run; each of said bands having work-engaging means at intervals thereon, the work-engaging means on one band cotiperative with those on the "other band to engage and control opposite side margins of the work; and means engaging said bands to cause them to run 1n unison, for enabling the work-engaging means on one band to cooperate properly with those on the other band.

LYMAN R. ROBERTS. Witnesses:

JOHN O. SEIFERT, K. FRANKFORT. 

